Find the refractive index of index of the material if angle of incidence of ray of light is 45┬░ and the angle of refraction in the material is 30┬░.
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given : sine i = 45° & sine r = 30 °
sine 45 / sine 30 = 1/√2 ÷ 1/√2
,= 2/√2
=√2
=1.41
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